我试图在数据网格中显示不同的行,有时会显示不同的单元格内容。
我对不同的行有不同的类,例如
第1课:
名称 - 说明 - 复选框
第2课:
名称 - 说明 - 文本框(运行时的用户输入) - 复选框
第3类
名称 - 文本框(运行时用户输入)
这些类是通过继承关联的,所以我可以在同一个observablecollection中使用它们。
我想根据我选择添加的类在数据网格中显示这些内容,例如:
ObservableCollection<Rowitem> rowitems = new ObservableCollection<Rowitem>();
rowitems.Add(new Class1("Tom", "Nice", false));
rowitems.Add(new Class2("John", "Strange", Empty textbox , true));
rowitems.Add(new Class3("Roger", Empty Textbox));
..意思是我希望datagrid在第二行的第三列中显示一个空文本框,其中第一行中有一个复选框,第三行中没有任何内容。这可能吗?
答案 0 :(得分:1)
您可以使用DataTemplates执行此操作:
只需将其添加到Resources
的{{1}}:
Grid
答案 1 :(得分:0)
这是我的建议:
<Window x:Class="DataGridDynamicCellView.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:DataGridDynamicCellView"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
Title="MainWindow"
Width="525"
Height="350"
mc:Ignorable="d">
<Window.DataContext>
<local:DynamicCellsDataContext />
</Window.DataContext>
<Grid>
<DataGrid ItemsSource="{Binding DataGridSource}">
<DataGrid.Resources>
<DataTemplate DataType="{x:Type local:PresentedByCheckBox}">
<Grid HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<CheckBox HorizontalAlignment="Center"
VerticalAlignment="Center"
IsChecked="{Binding IsChecked,
UpdateSourceTrigger=PropertyChanged}" />
</Grid>
</DataTemplate>
<DataTemplate DataType="{x:Type local:PresentedByTextBox}">
<Grid HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="{Binding HelloWorld,
UpdateSourceTrigger=PropertyChanged}" />
</Grid>
</DataTemplate>
<DataTemplate DataType="{x:Type local:PresentedByComplexBox}">
<StackPanel HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Orientation="Horizontal">
<Ellipse Height="10" Width="10" Fill="Pink"/>
<CheckBox HorizontalAlignment="Center"
VerticalAlignment="Center"
IsChecked="{Binding Checked,
UpdateSourceTrigger=PropertyChanged}" />
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="{Binding HelloWorld,
UpdateSourceTrigger=PropertyChanged}" />
</StackPanel>
</DataTemplate>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="BorderBrush" Value="Green" />
<Setter Property="BorderThickness" Value="2" />
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<ContentControl Content="{Binding}" />
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</DataGrid.Resources>
</DataGrid>
</Grid></Window>
MVVM视图模型:
public class DynamicCellsDataContext:BaseObservableObject
{
public DynamicCellsDataContext()
{
DataGridSource = new ObservableCollection<object>
{
new PresentedByTextBox("Hello world!!!"),
new PresentedByCheckBox(true),
new PresentedByComplexBox("Hello world!!!", true),
};
}
public ObservableCollection<object> DataGridSource { get; set; }
}
public class PresentedByComplexBox:BaseObservableObject
{
private string _helloWorld;
private bool _checked;
public string HelloWorld
{
get { return _helloWorld; }
set
{
_helloWorld = value;
OnPropertyChanged();
}
}
public bool Checked
{
get { return _checked; }
set
{
_checked = value;
OnPropertyChanged();
}
}
public PresentedByComplexBox(string helloWorld, bool isChecked)
{
HelloWorld = helloWorld;
Checked = isChecked;
}
}
public class PresentedByCheckBox:BaseObservableObject
{
private bool _isChecked;
public bool IsChecked
{
get { return _isChecked; }
set
{
_isChecked = value;
OnPropertyChanged();
}
}
public PresentedByCheckBox(bool isChecked)
{
IsChecked = isChecked;
}
}
public class PresentedByTextBox:BaseObservableObject
{
private string _helloWorld;
public string HelloWorld
{
get { return _helloWorld; }
set
{
_helloWorld = value;
OnPropertyChanged();
}
}
public PresentedByTextBox(string helloWorld)
{
HelloWorld = helloWorld;
}
}
BaseObservableObject类:
public class BaseObservableObject : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
var handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
protected virtual void OnPropertyChanged<T>(Expression<Func<T>> raiser)
{
var propName = ((MemberExpression)raiser.Body).Member.Name;
OnPropertyChanged(propName);
}
protected bool Set<T>(ref T field, T value, [CallerMemberName] string name = null)
{
if (!EqualityComparer<T>.Default.Equals(field, value))
{
field = value;
OnPropertyChanged(name);
return true;
}
return false;
}
}
这就是全部,如果您需要更多示例,请与我联系。
最好的问候。